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  • Committer: Jiri Svoboda
  • Date: 2013-04-20 10:42:13 UTC
  • Revision ID: jiri@wiwaxia-20130420104213-ah2nlkbgo7gba5zv
Construct domain names, fix some bugs. Parse answer, print resulting hostname and IP address.

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uspace/srv/net/dnsres/dnsres.c
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 */
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#include <stdio.h>
 
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#include <stdlib.h>
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#include <errno.h>
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#include "dns_msg.h"
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#define NAME  "dnsres"
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static int addr_format(inet_addr_t *addr, char **bufp)
 
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{
 
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        int rc;
 
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        rc = asprintf(bufp, "%d.%d.%d.%d", addr->ipv4 >> 24,
 
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            (addr->ipv4 >> 16) & 0xff, (addr->ipv4 >> 8) & 0xff,
 
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            addr->ipv4 & 0xff);
 
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        if (rc < 0)
 
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                return ENOMEM;
 
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        return EOK;
 
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}
 
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int main(int argc, char *argv[])
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{
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        dns_host_info_t hinfo;
 
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        char *astr;
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        int rc;
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        printf("%s: DNS Resolution Service\n", NAME);
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        rc = dns_name2host("helenos.org", &hinfo);
 
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        rc = dns_name2host(argc < 2 ? "helenos.org" : argv[1], &hinfo);
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        printf("dns_name2host() -> rc = %d\n", rc);
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        if (rc == EOK) {
 
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                rc = addr_format(&hinfo.addr, &astr);
 
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                if (rc != EOK) {
 
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                        printf("Out of memory\n");
 
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                        return ENOMEM;
 
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                }
 
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                printf("hostname: %s\n", hinfo.name);
 
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                printf("IPv4 address: %s\n", astr);
 
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                free(astr);
 
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        }
 
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        return 0;
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}
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